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The Open Question

A medium SQL mock interview question on DataDriven. Practice with AI-powered feedback, real code execution, and a hire/no-hire decision.

Domain
SQL
Difficulty
medium
Seniority
L4

Interview Prompt

A product team wants the daily open rate for its push notifications: of the notifications sent on a given day, what share were opened (`opened` is 1). Report that rate for each send date, and include only the dates where at least one notification was opened.

Summary

Push sent. How many opened?

How This Interview Works

  1. Read the vague prompt (just like a real interview)
  2. Ask clarifying questions to the AI interviewer
  3. Write your sql solution with real code execution
  4. Get instant feedback and a hire/no-hire decision

Related

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